S
M
T
W
T
F
S
26
61°
36°
27
65°
40°
28
66°
42°
29
70°
43°
30
71°
46°
1
73°
45°
2
69°
46°
3
69°
48°
4
72°
45°
5
71°
44°
6
64°
39°
7
65°
40°
8
69°
48°
9
69°
49°
10
65°
48°
11
66°
42°
12
68°
44°
13
71°
45°
14
70°
49°
15
72°
52°
16
77°
52°
17
73°
53°
18
69°
52°
19
71°
52°
20
76°
52°
21
77°
53°
22
77°
52°
23
74°
48°
24
70°
48°
25
74°
52°
26
77°
53°
27
81°
55°
28
80°
55°
29
83°
56°
30
84°
55°
31
75°
53°
1
79°
52°
2
72°
48°
3
79°
56°
4
84°
56°
5
79°
51°
6
84°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Weiser
Weiser's May 2026 forecast shows daily high temperatures ranging from 61° to 84°, with overnight lows between 36° and 56°. The average high for May is 73° with an average low of 49°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Weiser. See also: June | July | August.